Add cache-level predicate support for informers

[brendandburns]

Splits cache-level informer predicate changes out of #4892.

Summary

• allow informer factories to accept cache predicates
• filter objects at the cache layer
• emit the appropriate add, update, and delete notifications as objects enter or leave the cache predicate
• add unit and end-to-end coverage

Validation

• ./mvnw -q -pl util,e2e -am compile test-compile -DskipTests

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: brendandburns / name: Brendan Burns (f0442fb)

[yue9944882]

/lgtm
/approve

[kubernetes-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: brendandburns, yue9944882

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[kubernetes-prow]

PR needs rebase.

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[kubernetes-prow]

PR needs rebase.

Details

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.